Finding the Third Proportional to 397,293 and 862,312.88

Step by Step Solution

1. Step 1: Write the proportion equation
   397,293 : 862,312.88 = 862,312.88 : x
2. Step 2: Convert to fraction form
   397,293/862,312.88 = 862,312.88/x
3. Step 3: Cross multiply
   397,293x = 862,312.88 × 862,312.88
4. Step 4: Simplify right side
   397,293x = 743,583,494,390.77
5. Step 5: Solve for x
   x = 743,583,494,390.77/397,293
6. Step 6: Final answer
   x = 1,871,624.96